Sad to inform you Firework will not support Spotify after March 30 update. :( Unfortunately, there is a technological limitation. We hope this limitation will be resolved in next 2-3 months. We will inform you.
Hi, thank you for your bug report. We will investigate this issue. I will inform you about results.
Spotify uses Widevine Content Decryption Module and looks like this component have some issues. Firework based on NW.js technology, NW.js has low priority request to resolve this issue. We have increased a priorty of the issue and will fix it soon.
Glad to inform you Firework will support Spotify after March 30 update.
Customer support service by UserEcho